Hydraulic draw-bench.



l PATENTBD JAN. 31, 1905. o. HEER. HYDRAULIG DRAW BENGH.

y No. 781,202.

APPLIOATIQN FILED 'oo'.r. e. 1903.

2 SHEETS-SHEET z.

UNITED v STATES Patented January 31, 1905.l

PATENT OFFICE.

OTTO HEER, OF DSSELDORF, GERMANY.

HYDRAULIC DRAWfeENoH.

SPECIFICATION forming part of Letters Patent No.` 781,202, dated JanuaryS1, 1905.v Application tiled October 8, 1903. *Serial No. 176,301.

To (LZZ whom it may concer-71,.-

Beit known that I, OTTO HEER, engineer, al

i citizen of the' Swiss Confederation, residing at No. 45 Graf Adolfstrasse, in the city of Dsseldorf, Kingdom of Prussia, German Empire,have invented certain new and useful Improvements in HydraulicDraw-Benches, of which the following is a specification.

The object of this invention is a hydraulic wire-drawing frame of aspecial construction -whose power expended can be adapted in arrangementthat several driving-cylindersA working simultaneously or separately andindependently can effect the drawing.

On the drawings this drawing -frameis .shown in Figure l in alongitudinal section 1 gether.

on the line o fu of Fig. 3; in Fig. 2 in a longitudinal section on theline w w of Fig. 3.

-Fig. 3 is a plan or top view; Fig. 4, a crosslsection on the line a; w;Fig. 5, a cross-section on the line y y, the side cylinders workingseparately; Fig. 6, a cross-section on line z z, `showing the threecylinders working to- Similar letters refer to similar parts th roughoutthe several views.

The apparatus is constructed with three driving-cylinders a Z c, notconnected with each other, lixed alongside each other on the same level,parallel, and in a horizontal position. Of the rams' Z e f of thesecylinders only the outside ones, cZf, are provided von their outer orfront ends with slide-blocks g Zt, which travel along slides 'Z Z4 in aline with the axis of their driving-cylinder. The ram e of' the middlecylinder Z (which is preferably of a larger diameter than the others) isprovided with no special guide. The outer end of the ram e of the middlecylinder?) is of a conical shape corresponding with a conical Abore inthe cross-head Z, intended to receive this end. This cross-head is ofthe same width as the slide-blocks of the side plungers. Its two endsare bifurcated, and the two prongs of this fork catch over thehead-pieces g in the center of the upper surface of the slid( theprongs, a iilrm union is eifected between the cross-head Z and the twoslide-blocks g Z1..

Each of the three cylinders is provided with a suitable valve,arrangement t, by means of which the interior can be put incommunication with the supply-pipe u of the high-pressurewater or theoutlet-pipe a or shut off fromeither. For work which does not requirealarge amount of power each of the two side cylinders is usedseparately, the dies p required being preferably afXed to the frontflange of the cylinders and the internal dies p', required for drawingpiping and the like, aiiiked to the back 'of the cylinders. The forwardmovement of the-materials which are being drawn and. whichv are securedto the headsy g Zt' ofthe slide-blocks g /t by means of clamps s iscaused by the rams Z f, which are subjected to the force of thehigh-pressure water entering the cylinders, while the return motion ofall the parts is effected on either side by means of a weight r, whichis raised by means of the loose pulley g of a pulleyblock, when therespective slide-block moves v `forward and sinks down on thepressure-wa-y ter being let off. If the power of one of the outsidecylinders is insuliicient for a given piece of work, the two arecombined by means of the cross-head Z, clamps s being withdrawn andbolts m a inserted instead, and the piece of work is secured to a clampforming the head'of the bolt 0, secured to the cross-head Z. The centralram is not moved in this case. Itis only brought into action should thepower 'of the outside cylinders be insulicientfor the may be used, andthus a more complex combination regarding the adaptation to the powerexpended each time be attained.

What I claim as my invention, and desire to secure by Letters Patent ofthe United States,

l. ln combination with three parallel fluidactuated cylinders and theirplungers, a crosshead adapted to be engaged by the middle plunger,devices interposed between the two outer plungers and the saidcross-head in order that the said plungers and cross-head may movetogether and means moving with the said cross-head for holding the rodsor tubes to be operated on, the said parts permitting the two outerplungers to work either With or Without the middle plungei`substantially as set forth.

2. A pair of fluid-actuated cylinders and their plungers, adapted toWork together, in combination with devices actuated by said plungers, athird fluid-actuated cylinder, its plunger and means actuated at will bythe latter and connecting said devices in order that the three maycooperate, and said means adapted to carry a clamp for the article to beoperated on, substantially asset forth.

3. A pair of Huid-actuated cylinders and their plungers, in combinationwith sliding blocks adapted to be engaged by the said plungers, meansconnecting the said blocks to each other in order that they may worktogether, a third Huid-operated cylinder and its plunger, the latterplunger engaging and actuating at will said connecting means in orderthat the three may cooperate substantially as set forth.

4. Three parallel fluid-actuated cylinders and their plungers, devicesengaged by the outer plungers, in combination with means for connectingsaid devices, said means being also adapted to be engaged by the middleone at will, and automatic means for replacing each of the outerplungers, the outer plungers being adapted to act independently of themiddle one when the latter is not thus engaged and the middle plungerbeing adapted to act alone substantially as set forth.

5. Three parallel Huid-actuated cylinders and their plungers, incombination with a pair of guides, apair of slide-blocks moving in saidguides and adapted to be engaged by the two outer plungers and across-head connected to the said blocks and adapted to be engaged by themiddle plunger, the cross-head being separable at will from the middleplunger or the said pair of blocks, substantially as set forth.

6. Three parallel fluid-actuated cylinders and their plungers, incombination with sliding blocks adapted to engage the two outerplungers, weights connected to the said blocks for withdrawing the sameautomatically, a pair of fixed guides for said blocks, a cross-headconnected to the said blocks and adapted to be engaged by the saidmiddle plunger and rod-holding means adapted to be applied to the saidcross-head at will substantially as set forth.

7. Three reciprocating plungers, in combination with blocks engaged byand moving with the two outer plungers, a cross -head adapted to beengaged bythe middle plunger and also by said blocks,and rod-holdingmeans constructed to be attached to said cross-head, the constructionand combination of the said parts permitting the middle plunger to beused alone, or the two outer plungers to be used without it or all threeof the plungers to be used together substantially as set forth.

8. A pair of reciprocating plungers in combination with a pair ofsliding blocks adapted to detachably engage them respectively, and toreceive rod-holding means, guides for the said blocks and means forconnecting the said blocks together, in order that either plunger may beused alone or both plungers in coperation, the said connectingmeansbeing also provided with a rod-holding device, substantially as setforth.

9. A pair of reciprocating plungers, in combination with a pair ofsliding blocks adapted to detachably engage them respectively, and

to receive rod-holding means movable therewith, guides for the saidblocks, means for retracting the said blocks automatically andindependently and means for connecting the said blocks together in orderthat either plunger may be used alone or both plungers may be used incooperation, the said connecting means being provided with a rod-holdingdcvice, substantially as set forth.

l0. A pair of reciprocating plungers,in combination with a pair ofsliding blocks adapted to detachably engage them respectively, and toreceive rod-holding means movable therewith, guides for the said blocks,a cross-head connecting said blocks together, a third reciprocatingplunger adapted to detachably cngage the said cross-head for cooperatingwith the other two plungers and means for retracting the said blocks andcross-head automatically, the said cross-head being also provided with arod-holding device, substantially as set forth.

1l. Two plungers and means to actuate the same, in combination withblocks adapted to be engaged by said plungers and constructed each toreceive a clamp and a cross-head constructed to connect said blocks andalso to receive a clamp, whereby the two plungers may be used separatelyor together.

l2. Two plungers and means to actuate the same in combination withdevices engaged and moved by said plungers and means connecting saiddevices, the devices thus engaged and also the said connecting meansbeing adapted to receive and carry work-holding attachments, in orderthat the said plungers may be used separately or together.

13. Three plungers and means for actuating them, in Combination withdevioes engaged hy two of the said plungers and adapted to receiveclamps at will, meansv connecting the saiddevices together and alsoadapted to receive a clam p and engage the third plunger,

whereby the three plungers may be used separately or all together, ortwo of them without the third, as desired. 4

14. Three plungers and means for actuating them, in combination withblocks engaged by two of the said plungers respectively movv ing withthe same and adapted to carry clamps,

OTTO

Witnesses:

. n PETER LIEBER,

WILLIAM EssENwEIN.

